MAX232ESE+

Overview

The MAX232ESE+ is a dual driver/receiver RS-232 transceiver designed for single +5V supply operation. It features an integrated charge pump that generates the required ±10V internal voltages, eliminating the need for external bipolar power supplies. The device provides full duplex communication with two drivers and two receivers. Electrical specifications include a typical data rate of 120 kbps, a maximum propagation delay of 10 µs, and a supply current of 10 mA under normal operating conditions. It operates within a voltage range of 4.5 V to 5.5 V and supports an extended industrial temperature range from -40°C to +85°C.

Feature Summary

• Integrated charge pump circuitry enables single-supply operation without requiring external bipolar voltage sources.
• Provides full-duplex signal translation between TTL/CMOS logic levels and RS-232 voltage standards.
• Supports standard EIA/TIA-232E and V.28/V.24 communication protocols.

Applications

• Interface translation between microcontrollers and RS-232 peripherals
• Multidrop RS-232 network connections
• Portable diagnostic equipment serial ports

Procurement Notes

Verify the specific suffix 'ESE+' against the manufacturer's official ordering guide to confirm the package type and temperature grade. Confirm RoHS compliance status through the supplier documentation. Ensure the component source matches Analog Devices or Maxim Integrated authorized channels to avoid counterfeit parts.

Selection Notes

Select this component when board space constraints prevent the use of external charge pump capacitors found in older designs. Verify that the system requires only two transmit and receive channels. Check if the 120 kbps data rate meets the application requirements compared to higher-speed alternatives in the MAX220-MAX249 family.

Part Context

This part belongs to the MAX220–MAX249 family of +5V-powered multichannel RS-232 drivers and receivers. The family offers various channel configurations and package options tailored for different interface needs. The MAX232 variant specifically addresses applications requiring dual-channel communication capability within a compact footprint.

Replacement Considerations

Direct pin-compatible replacements within the same family include the MAX232A, which shares identical functionality but may offer updated manufacturing processes. Other family members like the MAX202 provide similar dual-channel capabilities.